:root {
    --header: 66px;
    --themColor: #00bdff;
    --writeColor: #fff;
    --fontColor: #666;
    --borderColor: #dddddd;
    /* 头部高度 */
    --Hheight: 66px;
    /* 主体颜色 */
    --mColor: #1271ef;
    /* 灰色边 */
    --bColor: #d1d1d1;
}

body {
    background-color: #f8f8f8;
}

/* -----------------头部 --------------*/
header {
    top: 0;
    left: 0;
    height: var(--header);
    width: 100%;
    min-width: 1200px;
    z-index: 40;
    /* background-color: transparent; */
    background-color: #1d1d1d;
    color: var(--writeColor);
    padding: 20px 28px;
    border-bottom: 1px solid #88afe7;
}

/* 头部logo */
header h2 a {
    font-size: 0px;
    display: block;
    width: 140px;
    height: 30px;
    background: url(../images/header-logo.png) no-repeat;
}

/* 头部导航栏 */
header ul li {
    float: left;
    width: 50px;
    line-height: 64px;
    text-align: center;
    margin-right: 38px;
    cursor: pointer;
}

header ul li a {
    color: var(--writeColor);
}

/* 导航栏激活样式 */
header ul .active a {
    color: var(--themColor);
    font-weight: bold;
}

header ul li.active {
    border-bottom: 3px solid var(--themColor);
}

/* 登录,注册按钮 */
header .login,
header .register {
    border-radius: 20px;
    padding: 6px 15px;
    color: var(--writeColor);
}

header .login {
    border: 1px solid var(--writeColor);
    margin-right: 8px;
    background-color: var(--writecolor);
}

header .register {
    color: var(--writeColor);
    background-color: #ed510a;
    border: 1px solid #ed510a;
}

/* banner区域 */
#banner {
    width: 100%;
    height: 416px;
    position: relative;
}

#bannerBg {
    left: 0;
    z-index: 0;
    width: 100%;
    height: 350px;
    background-color: #1d1d1d;
}

.banner {
    width: 1200px;
    height: 290px;
    position: absolute;
    top: 210px;
    left: 350px;
}

.bannerLeft {
    width: 600px;
    height: 290px;
    float: left;
    background-color: var(--writeColor);
    padding: 45px;
    box-sizing: border-box;
}

.bannerLeft h1 {
    font-size: 26px;
    margin: 20px 0;
}

.bannerLeft p {
    font-size: 13px;
    line-height: 28px;
}

.bannerRight {
    width: 600px;
    float: right;
}

.bannerRight img {
    width: 100%;
    height: 290px;
}

#content {
    margin-top: 150px;
}

article {
    margin-bottom: 100px;
}

article p {
    font-size: 14px;
    line-height: 28px;
    margin-top: 20px;
}

article h1 {
    font-size: 30px;
}

.department {
    float: right;
}

/* 小横条 */
.department>p::before {
    display: inline-block;
    content: "";
    width: 14px;
    height: 4px;
    background-color: #0f62d1;
    margin: 6px 13px 2px 0;
}

article:last-child>img {
    width: 100%;
    height: 600px;
}